There was (still is?) a Dick’s Liquor in La Jolla, CA. But it would be kind of a beck move for me to mention it.
Aw, Dick Trickle died? I missed it.
I worked with a guy named Richard Head*. NEVER call him Dick.
*Why did his parents hate him so?
I’m not sure I know any ‘Dicks’ younger than 60.
I had a coworker who did the same thing at a client’s office. He leaped out of his chair to go explain that one to the CEO before their IT team could beat him to it. 
And for the OP, I work with a Dick who’s in his early 50s. That’s been the cut-off age, in my experience.
Clarence Boddicker: [gets up close to Jones’ face] Hey… take a look at my face, Dick! He was trying to kill me.
…
Dick Jones: Suit yourself, Clarence… but Delta City begins construction in two months. That’s two million workers living in trailers. That means drugs, gambling, prostitution - virgin territory for the man who knows how to open up new markets. One man could control it all, Clarence.
Clarence Boddicker: Well, I guess we’re gonna be friends after all… Richard.
From the 30-year old predictive documentary of future American politics and crime.
I see that!!
He must not be an observant Jew; for them, the cut-off age is 8 days.
I’m from the 1950s and anyone I ever knew named Richard was called Richard, Rich or Rick. There was one kid in town called “Dickie,” and to my way of thinking, Dickie is far worse than Dick.
I used to work with a Richard in a job in the early 90’s where two or three people spent most of the day driving around together. For some reason, we girls started calling him Dickie. It wasn’t intended to be mean, and he wasn’t offended by it. I have no idea why. Other than that, I don’t recall anyone I’ve met called Dick.
I met a Butch once. That’s another name you don’t see much anymore.
Breathe easy everyone. I just tried it and dicks.com redirects to https://www.dickssportinggoods.com/
So what is the current usage to replace
“every Tom, Dick and Harry”
Couldn’t resist. Sorry.
I’m not sure if Butch is a nickname for a particular given name (I suspect that it isn’t, but I may be mistaken), but you’re right, it’s definitely fallen out of favor.
See post #10.
Youngest I ever met was born in 1961.
The baseball player Dick Allen was dubbed “Richie” by the Philadelphia media when he began to play for the Phillies. When he left to play for the Chicago White Sox, he insisted on being called “Dick,” stating that Richie was a “kid’s name.”
I worked with a Richard Dixon. Whose parents obviously hated him too.
Yeah, he committed suicide in 2013, after suffering from severe chronic pain for some time. Very sad.
When I was growing up in Wisconsin in the 1970s and 1980s, he was one of the biggest names in the local racing scene, and it was a big deal when he made the jump to NASCAR.
This reminded me of Dickie Thon (which is, itself, a name on a par with Dick Trickle – it’s like a porn telethon), a MLB infielder in the 1980s. As he was born in 1958, he’s another example of what appears to be the last generation of Dicks.
I remember having thought this for a long time, that there was a pretty stark generation gap in who would shorten their name this way. But then I encountered someone semi-famous who was a lot younger than the usual suspects. I wish I could remember who it was: a musician, I think?
As the child of someone who died by suicide, I implore you to let this “committed” usage die out, the same way “Dick” is.
https://www.cnn.com/2018/06/09/health/suicide-language-words-matter/index.html